Question about 2004 Chevrolet TrailBlazer

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Need to change coolent temperture sensor.How do i locate it?

My car came up with code po128

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The sensor should be located on the thermostat housing...follow the upper rad hose to the engine, where it enters the engine is the thermo housing...should have an oval plug with 2 wires

Posted on Feb 20, 2009


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What is the cause for this po128 dtc code on a 2005 chrysler sebring ?

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Does the code po128 have any thing to do with the auto trany shifting hard at times had the trany fluid and filter replaced today has not shifted hard today yet anyway .paved $2200. because check eng

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1996 Jetta appears to overheat but no coolent loss

the temp sensor is the trigger for the fans!!
the thermostat may be in upside down??
check new thermostat in a pot of water & heat it up watch that it opens up when it heats up should be at aroun 96 degrees F
otherwise the radiator may need a good clean out or a recore!
there my be a blocked water gallery so engine may need a flush aswell
Cheers Rob

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